They also have their own validators: https://cards-dev.twitter.com/validator and https://developers.facebook.com/tools/debug/
The only issue I'm aware of is that Facebook's crawler breaks about every two months or so.
>https://developer.twitter.com/en/docs/twitter-for-websites/c...
So, I should have to include twitter specific meta tags even though I personally don't care about twitter? Maybe twitter should make it clear which tags they read? Maybe it's SEO bullshit I don't care about? Maybe even even the OG: tags don't work all the time and result in dumb previews?